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    <title>Document</title>
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<body>
    <script>
        console.log('script start') // 1

        async function async1() {
        await async2()
        console.log('async1 end') // 5
        }
        async function async2() {
        console.log('async2 end') // 2
        }
        async1()

        setTimeout(function() {
        console.log('setTimeout') // 8
        }, 0)

        new Promise(resolve => {
        console.log('Promise') // 3
        resolve()
        })
        .then(function() {
            console.log('promise1') // 6
        })
        .then(function() {
            console.log('promise2') // 7
        })

        console.log('script end') // 4
    </script>
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